SI5345B-B05314-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B05314-GMR is a factory preprogrammed clock multiplier and jitter attenuator from the Si5345 Rev D family. It features four inputs and ten outputs, supporting any-frequency generation up to 350 MHz with integer and fractional synthesis. The device utilizes fourth-generation DSPLL technology for ultra-low jitter performance of 90 fs rms. It operates on a 1.8 V core voltage and includes in-circuit programmable non-volatile memory. The component is housed in a 64-QFN package measuring 9x9 mm and supports I2C or SPI serial interfaces.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis
• Features ultra-low jitter attenuation of 90 fs rms via fourth-generation DSPLL technology
• Supports hitless input clock switching between fractionally related sources
• Includes in-circuit programmable non-volatile memory for known power-up configurations

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN muxponders and transponders
• 10/40/100 G networking line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'GMR' indicates tape and reel packaging rather than tube. Confirm that the numerical sequence 'B05314' corresponds to the intended factory preprogrammed configuration. Ensure compatibility with the required supply voltages and interface protocols before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when low jitter performance below 350 MHz is required alongside flexible input/output configurations. The B-series designation limits the maximum output frequency compared to A or C series variants. Verify that the preprogrammed configuration matches the design requirements to avoid reprogramming needs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which integrates MultiSynth dividers and a DSPLL loop filter on-chip. The family includes Si5345, Si5344, and Si5342 variants differing primarily in output count. The Si5345 specifically provides ten outputs within a 64-pin QFN package.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345B-D-GM